Large swinging electroscope with speed and scale

MACHINE TRANSLATION (not authorised yet)

A large (25 cm) swinging electroscope with a rigid metal pointer, sensitive and clearly visible in classroom experiments in a demo form. The angle of the tip's deflection depends on the charge that has flown from an electrically charged object, e.g. abonite stick rubbed with a piece of fur, when applied to a ball bar or plate. The electroscope is equipped with two electrodes - a flat plate (ending with a metal plate) and a spherical one (ending with a metal ball) - which can be used interchangeably. An additional element is the electrophore. The degree of the pointer's deflection can be determined by means of a transparent 8-stage angle scale. The electroscope has side and top metal walls and they are fixed to a stable base. The front and back walls are transparent (glass) and the front glass pane is retractable (upwards), allowing ionised materials to be inserted into the electroscope. Teaching aids recommended for electrostatic experiments, including topics such as induction and electrostatic influence (Coulomb's Law). Dimensions of the didactic aids: 20 x 12 x 25 cm.